The U.S. Environmental Protection Agency (EPA) has created a new webpage outlining how to make Do It Yourself (DIY) air cleaners. DIY air cleaners can be used when commercial ones are not available or not affordable, especially during emergencies like wildfire smoke events. DIY air cleaners can improve indoor air quality by filtering fine particles that can affect heart and lung health. The DIY air cleaners can be created with common household materials like box fans and HVAC filters and are a good option when commercial air cleaners are not available.
For more information and step by step instructions with pictures, visit DIY Air Cleaners | US EPA.
Below is a video with instructions on how to build a DIY air cleaner.